Adjustments for textile card calender rolls



July 4, 1961 c NORTON ET AL 2,990,586

ADJUSTMENTS FOR TEXTILE CARD CALENDER ROLLS Filed Dec. 21, 1956 52 50 INVENTOR'.

CHARLIE L. -0/27-0/v 'T'.x=:. El RALPH COCHRAN BY 142M": 5.)

ATTORNEY United States Patent 2,990,586 ADJUSTMENTS FOR TEXTILE CARD CALENDER ROLLS Charlie L. Norton and Ralph V. Cochran, Danville, Va.,

assign'ors to Dan River Mills, Incorporated, Danville,

Va., a corporation of Virginia Filed Dec. 21, 1956, Ser. No. 629,919 Claims. (Cl. 19-159) The present invention relates to an improved calender roll mounting for textile processing machines, such as cards.

One object of the invention is to provide means for adjusting the calender rolls of the so-called Saco-Lowell type card coiler head. More specifically, it is an object of this invention-to provide adjustment means for aligning the calender rolls of such coiler heads.

It is also an object of the invention to provide means for adjusting the clearance between the calender rolls of such coiler heads. Other objects will be apparent from the following description and the attached drawings.

The Saco-Lowell type coiler head includes a base mounting a pair of calender rolls for advancing sliver from a trumpet to the point where it is soiled into a sliver can. cooperating calender rolls; one being a stationary roll and the other being a movable roll. The so-called stationary roll is rotatably driven and is journaled in a pair of brackets which are fixed on the base. The movable roll is journaled on a pair of arms which are pivotally mounted on stationary brackets fixed on the base and the movable roll is rotatably driven by gears connecting it with the stationary roll.

In-accordance with this prior art, no adjustment is provided for calender roll clearance and no adjustment is provided for aligning the movable and stationary rolls. This has presented a very definite problem in those instances where the device was not made properly or where, for one reason or another, adjustment has been required. The problem .is somewhat complicated, because the base and the brackets fixed on it are made by being cast as a unitary member.

These difilculties have been overcome and suitable adjustments have been provided by the novel structure of the present invention. This structure includes a pair of removable and replaceable eccentric bushings, one mounted in each of the brackets provided for pivotally mounting the arms carrying the movable roll. Set screws are included for predetermining the relative rotational positipn of each of the eccentric bushings, so that by merely rotating and fixing one or both of the bushings the movable calender roll may be brought into proper alignment with the stationary calender roll. It will be realized that turning one of the bushings changes the throw of the cue arm it pivots.

To obtainsuitable clearance means, the present invention provides an adjustable striker, limit, or abutment means mounted on one of the brackets carrying the stationary roll for operative engagement with one of the arms carrying the movable roll. The adjustable striker includes a bearing block provided with a screw-threaded bore, usually vertical, a tapered screw in the bore, a second bore leading to the first bore and a striker pin mounted in the second bore with one end extending out-- wardly in the directions of the movable roll and the other end in engagement with the taper of the tapered screw. Thus, by changing the position of the tapered screw in the first bore, the pin may be caused to extend outwardly from the block a predetermined distance. The position of the pin is always such that it will engage one of the arms carrying the movable roll for limiting its movement According to the prior art, there are two Patented July 4, 19 61 .2 in the direction of the stationary roll, thereby predetermining the clearance between the two rolls.

It will be seen that any adjustment of alignment will require a check of clearance and usually an adjustment of clearance. Thus, the two adjustment means cooperate to improve the accuracy of setting of card calender rolls.

The invention will be better understood by reference to the attached drawings, in which:

FIG. 1 is a plan view of a coiler head constructed in accordance with the present invention with the top removed for purposes of illustration;

'FIG. 2 is a view taken along line 22 of FIG. 1;

FIG. 3 is a detailed plan View of the stationary brackets carrying the eccentric bushings as shown in FIG. 1;

FIG. 4 is an enlarged plan view of one eccentric bushing constructed in accordance with this invention;

FIG. 5 is a view partly in section, partly in elevation, showing the clearance adjustment means constructed in accordance with the invention.

In the preferred embodiment of the invention illustrated in FIG. 1, it will be seen that a conventional Saco-Lowell" type card coiler head includes a base 10 on which is mounted stationary brackets 11, 12, 13 and 14, each of which is integrally formed with base 10 from a single casting. Coilers of this type are illustrated in many prior art patents, such as Francis 432,132, granted July 15, 1890.

i Stationary brackets 11 and 12 journal a driven card calender roll 16 and stationary brackets 13 and 14 with shaft 15 form pivotal mountings for a pair of arms 19 and 20 carried on a sleeve 21. The outer ends of these arms form journals 25 and 26 for a second calender roll 18, which, in operation, is connected by gears to calender roll 16.

The conventional construction just described is modified and improved in the preferred embodiment of the present invention by first enlarging the holes in brackets 13 and 14 and inserting therein separate eccentric bushings 22 and 24 and then mounting therein the shaft 15, which mounts sleeve 21 and its arms 19 and 20 to provide adjustment for aligning rolls 16 and 18. In addition, a cooperating adjustable striker 28 is mounted on bracket 12 for predetermining the clearance between the calender rolls 16 and 18.

As can best be seen in FIGS. 2 and 4, each of the eccentric bushings comprises a bushing body 30 having a bore 32, a flanged head 34 and an oil groove 36. The head 34 is provided with a radial slot 38 into which a large screwdriver or the like may be inserted for rotating the bushing to any desired position. A pair of separate set screws 40 and 41 are provided in brackets 13 and 14 for engaging bushings 22 and 24, respectively, for 'fixing them in any predetermined rotational position to which they may be turned.

The adjustable striker 28, as can best be seen in FIG. 5, provides a bearing block 50 mounted on bracket 12. The bearing block is provided with a screw-threaded bore 52 into which is threaded a tapered screw 54. The bearing block 50 is also provided with a second bore 56 and a striker pin 58 is slidably mounted in the second bore with one end in camming engagement with the tapered portion of screw 54 and the other end extending outwardly in the direction of arm 20 to form an abutment therefor.

\ To make the necessary adjustments in accordance with the present invention, one need merely loosen set screws 40 and 41 and rotate either or both of the eccentric bushings 22 or 24, so as to change their relative rotational position until it is determined that the rolls 16 and 18 are in proper alignment. Obviously, if bushing 24 is rotated, the effective throw of arm 20 is changed. Likewise, if bushing 22 is moved, the effective throw of arm 19 is changed. Once the alignment is established, it may be necessary to adjust the clearance between the rolls 16 and 18. This can be done by raising-or lowering screw- 5 4 in bore 52 to predetermine the distance striker pin 58 will extend outwardly in the direction of arm 20. Once a proper clearance has been obtained, it will be seen. that striker pin 58 will remain in a fixed position and will continue to maintain proper clearance between the rolls by limiting the pivotal motion of the arms 19 and 20' and roll 18 in the directionof roll 16.

The means provided by this invention may be used in conjunction with any standard gauge means'for determining the correctness of the roll' alignment and the roll clearance.

It will be seen that the primary advantages of this invention are the provision of means for accomplishing adjustment and it will also be seen that another advantage of the invention lies in the removability and replaceability of the eccentric bushings and the adjustable striker mechanism.

While it will be obvious to thoseskilledfinthe art that the eccentric bushings may be mounted in any one or more of the brackets 11, 12, 13 or 14, or on the journals 25 and 26, it is deemed preferable to mount the'bushings in brackets 13 and 14 where they are'more readily accessible. It is also recognized that those skilled in the art may find it convenient to mount the bearing, block 50, either on bracket 11, bracket 12 or on one of the journals 25 or 26, but it is believed more convenient to mount the bearing block on one of the stationary brackets with bore 56 angled upwardly to keep pin 58in its proper position.

Other similar modifications may be' madeby those skilled in the art, without departing from the scope of the invention set forth in the accompanying claims;

We claim:

1. In a coiler head for textile cards wherein a base mounts a first driven calender roll journaled in afirst pair of stationary brackets and a second driven calender roll is journaled on a pair of arms which are'pivoted in a second pair of stationary brackets, that improvement which comprises two eccentric bushings, one mounted in each of said second pair of brackets, means on each of said bushings for rotating same, and separate means on each of said second brackets for fixing said bushings in any desired rotational position, said arms being journaled in said second brackets by means of said bushings whereby the alignment of said calender roll with respect to said first calender roll may be predetermined by the relative rotational position of said eccentricbushings.

2. In a coiler head for textile cards wherein a base mounts a first driven calender roll journaled in a first pair of stationary brackets and a second driven calender roll is journaled on a pair of arms which are pivoted in a second pair of stationary brackets, that improvement which comprises two eccentric bushings, one mounted in each of said second pair of brackets, slot means on each of said bushings for rotating same, and separate set screw means on each of said second brackets .for fixing said bushings in any desired rotationalposition, said arms being journaled in said second brackets by means of said bushings whereby the alignment of said second calender roll with respect to said first calender r011 may be predetermined by the relative rotational position of said eccentric bushings.

3. In a coiler head for textile cards wherein a base mounts a first driven calender roll journaled in a first pair of stationary brackets and a second driven calender roll is journaled on a pair of arms which are pivoted in a second pair of stationary brackets, that improvement which comprises two eccentric bushings, one mounted in each of said second pair of brackets, means on each of said bushings for rotating same, separate means on each of said second brackets for fixing said bushings in any desired rotational position, said arms being journaled in said second brackets by means of said bushings whereby the alignment of said second calender roll with respect to said first calender roll may be predetermined by the relative rotational position of said eccentric bushings, and adjustable abutment means on one of said brackets for predetermining the clearance of said calender rolls.

4. In a coiler head for textile cards wherein a base mounts a first driven calender roll journaled in a first pair of stationary brackets and a second driven calender roll is journaled on a pair of arms which are pivoted in a second pair of stationary brackets, that improvement which comprises two eccentric bushings, one mountedin each of said second pair of brackets, means on each of said bushings for rotating same, and separate means on each of said second brackets for fixing said bushings in any desired rotational position, said arms being journaled in said second brackets by means of said bushings whereby the alignment of said second calender roll with respect to said first calender roll may be predetermined by the relative rotational position of said eccentric bushings, and adjustable abutment means on one of said brackets for predetermining the clearance of said calender rolls, said last named means including a bearing block provided with a screw threaded bore, a tapered screw in said bore, a second bore leading to said first bore and a striker pin mounted in the second bore with one end extending outwardly and the other end in engagement with the taper of the tapered screw.

5. In a coiler head for textile cards wherein a base mounts a first driven calender roll journaled in a first pair of stationary brackets and a second driven calender roll is journaled on a pair of arms which are pivoted in a second pair of stationary brackets, that improve ment which comprises adjustable abutment means on one of said first brackets for predetermining the clearance of said calender rolls, including a bearing block provided with a screw threaded bore, a tapered screw in said bore, a second bore leading to said first bore and a striker pin mounted in the second bore with one end extending outwardly in the direction of said arms for engaging one of them andthe other end in engagement with the taper of the tapered screw.

References Cited in the'file of this patent UNITED STATES PATENTS Re. 2,759 Denny Sept. 3, 1867 432,132 Francis July 15, 1890 717,924 Reid Jan. 6, 1903 1,580,308 Lawson Apr. 13, 1926 2,180,046 Gleissner Nov. 14, 1939 

